Aplicando a regra de Sarrus, Calcule os determinantes:
|3 2 -1|
a)|5 0 4|
|2 -3 1|
|2 1 -2|
b)|3 -1 0|
|4 1 -3|
|a 0 0|
c)|0 b a|
|0 1 1|
|3 5 -1|
d) |0 4 2|
|0 0 -2|
|3 0 8|
e)|0 7 7|
|4 9 0|
|0 0 5|
f)|8 10 3|
|0 7 4|
Respostas
1.
a)
|3 2 -1| 3 2
|5 0 4| 5 0
|2 -3 1| 2 -3
d = 16 + 15 – 10 + 36
d = 57
.
.
b)
|2 1 -2| 2 1
|3 -1 0| 3 -1
|4 1 -3| 4 1
d = 6 – 6 + 9 – 8
d = 1
.
.
d)
|3 5 -1 | 3 5
|0 4 2 | 0 4
|0 0 -2| 0 0
d = -24
.
.
e)
|3 0 8| 3 0
|0 7 7| 0 7
|4 9 0| 4 9
d = -189 – 224
d = -413
.
.
f)
|0 0 5| 0 0
|8 10 3| 8 10
|0 7 4| 0 4
d = 160
OK, eu não posso consertar C), mas espero que ajude.
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2.
responda:
F)
2 1 -2
3-1 0 = Responda a esta pergunta
4 1 -3